The mission of the United States Air Force is to deliver sovereign options for the defense of the United States of America and its global interests -- to fly and fight in Air, Space, and Cyberspace. 

To achieve that mission, the Air Force has a vision of Global Vigilance, Reach and Power. That vision orbits around three core competencies: Developing Airmen, Technology-to-Warfighting and Integrating Operations. These core competencies make our six distinctive capabilities possible:

Air and Space Superiority :  With it, joint forces can dominate enemy operations in all dimensions -- land, sea, air and space.

Global Attack:  Because of technological advances, the Air Force can attack anywhere, anytime -- and do so quickly and with greater precision than ever before.
(NO GLOBAL ATTACK BY IVAO)

Rapid Global Mobility:  Being able to respond quickly and decisively anywhere we're needed is key to maintaining rapid global mobility.

Precision Engagement:  The essence lies in the ability to apply selective force against specific targets because the nature and variety of future contingencies demand both precise and reliable use of military power with minimal risk and collateral damage.
(NO PRECISION ENGAGEMENT BY IVAO)